George h



(No Model.)

G. H. HAVEN.

AUTOMATIC ELEVATOR STOP. N. 455,282. PatentedJune so, 1891.

UNITED STATES PATENT OFFICE.

GEORGE H. HAVEN, OF BEDFORD, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO JOHND. WILSON, OF SAME PLACE.

AUTOMATIC ELEVATO R-STO P.

SPECIFICATION forming part of Letters Patent No. 455,282, dated J' une30, 1891.

Application'iled March 13, 1891. Serial No. 384,895. (No model.)

' citizen of the United States, residing at New Bedford, in the countyof Bristol and State of Massachusetts, have invented new and usefulImprovements in Automatic Elevator Stops and Locks, of which thefollowing is a specification.

This invention has for its object to provide novel means for locking theshipper-rope of an elevator at any one of the stopping points -orlioors, so that movement of the shipperrope in either direction isprevented until it is released by the attendant.

of construction and the combination or arrangement of deviceshereinafter described and claimed, reference being made to theaccompanying drawings, in Which- Figure 1 is'a vertical section taken inthe plane of the shipper-rope. Fig. 2 is a plan view'of the parts, theshipper-rope 'and one of its enlargements being shown in dotted lines.Fig. 3 is a View showing the construction ot the lock or stop-bracket topermit the 'attachment of the shipper-rope.

In the said drawings, the reference-numeral 1 indicates the elevatorcage or car, having any usual construction, and adapted `either forpassengers or for merchandise. Through the cage or car passes theshipper-rope 2, in the Well-known manner, and upon said shipperrope areenlargements 3, formed of any suitable material and rigidly connected tothe rope 2 at different points, so located that When the car is arrestedat any one of its usual stopping-points one of these enlargements willbe inside the cage or car. These enlargements are substantiallycigar-shaped, the ends being truncated at points where the diameter isbut little greater than the vdiameter of the shipper-rope, while themiddle portion is about double, or somewhat more than double, thediameter of. said shipper-rope. These enlargements may be constructedand applied in any preferred manner, being made either in two similarparts, each containing one-half the groove for the rope, or formed inone piece and drilled or bored to form the longitudinal opening.

Within the elevator car or cage, and firmly To accomplish' this objectmy invention involves the features attached to the wall thereof at sucha point as to be Within convenient reach of the person in charge of thecar, is a bracket 4, upon lwhich is mounted an angle-plate 5, thevertical portion of the latter being strengthened by a central webor'brace 6. In the horizontal part of the same is formed an opening 7.,partly circular in form and of -such size as to freely permit thepassage of the shipperrope and the enlargements thereon. Within the saidhorizontal portion of the angle-plate is formed a recess for a fiatlatch-plate 8, of greater width than the opening 7, into which it isnormally projected by one or more springs 9. Connected to thelatch-plate is a spindle 10, which projects at the foot ot the verticalportion of the angle-plate, and upon the end of which is mounted a hook12. Upon the under edge of this hook is mounted a catch 13, and upon theouter face of the angle-plate below the hook is attached or formed aprojecting bracket 14, with the end of which the catch 13 is adapted toengage when the spindle is withdrawn far enough to retract the latch--plate and entirely withdraw it from the opening 7.

The manner of using this device is as follows: The person in charge ofthe elevator, having withdrawn the spindle 10 and retracted thelatch-plate, operates the shipperrope and starts the elevator in eitherdirection. If a stop is to be made at the next floor, the catch 13 isthrown off the bracket 14 at any moment after the car begins to move,and as the stopping-place is reached the enlargement upon theshipping-rope at that point enters the partially-closed opening 7,

and by the wedging action of its lend drives the latch-plate back untilthe central portion of the enlargement lies in the opening 7, bringingthe transverse notch or slot into line with the end of the latch-plate.The latter instantly snaps into the notch or slot, thereby causing theshipper-rope to travel with the elevator-car and arrest its movement.When this engagement is once effected, the shipperrope cannot Vbeoperated to start the car until the latch-plate is withdrawn. The latteris provided with a half-round notch 15, formed in its edge, to receivethe shipper-rope, which is partly exposed by the transverse slots 2a,

formed in the enlargements. It will be understood Without explanationthat these enlargements are so located with reference to the position ofeach landing, and with relation also to the position of the bracket 5,that the car will be arrested at the proper point. It the elevator is topass several stations or landings, the spindle is drawn back and thecatch 13 is hooked upon the bracket 14, from which it is detached at anypoint between the last two landings.

In many establishments, and especially Where freight-elevators are used,it is customary to operate the shipper-rope from a landing when theelevator is some distance above or below,in preference to Waiting untilit can be operated by the person in charge, who may be temporarilyabsent. Many accidents have been caused by this practice, as Well asbythe premature stopping and starting of the elevator by persons whosometimes seize the shipper-rope without knowing its use. My inventionwill efectually avoid liability to accidents of this kind, as itprovides a lock tor the shipper which prevents it from being operatedfrom any point except the elevator itself. Moreover, it will 1n inostinstances prevent meddling with the shipper by children and others Whoare not familiar With its construction and operation. I also providethereby an automatic elevators top which is exceedingly simple,comparatively inexpensive, and sure in operation.

In order to connect the shipper-rope Without taking it o, I form thelock in the manner shown in Fig. 3, in which the referencenumeral etindicates the horizontal part of the angle-plate, having the aperturefor the shipper-rope. Opening from this aperture is a channel 15, ofsuliieient width to admit the shipper-rope, said channel being cutthrough the forward part of the bracket or plate et. It is closed afterthe rope is inserted by a steel plug 1G, having a concave face 17 uponits end, Which completes the circular aperture. Upon the other end is aflange or head 1S, through which are passed screws tapped into the edgeof the bracket or plate. By this construction the shipper-rope isreadily connected to or disconnected from the lock Without trouble andwithout compelling the elevator to stop until the connection is made.

l. The combination, with the shipper-rope having enlargements taperedateach end and provided at or near their centers with notches, of thebracket 4, having an opening 7 and channel 15 leading therefrom, aremovable and replaceable head 1S, detachably secured to the bracket andhaving a plug 16 entering the channel, a spring-impelledrectilinearlysliding catch-plate S, mounted in the bracket and adaptedto engage the notches of the enlargements, and means for releasing thecatch-plate from the enlargements, substantially as described.

2. The combination, with the shipper-rope 9, having enlargements 3,tapered at each end and provided at or near their centers with notches2, of the bracket 1, having the oritice 7 and the laterally-projectingbracket 14,

the spring impelled rectilinearly sliding catch-plate S, mounted in thebracket and provided with the spindle 10, and the fingerhook 12,attached to the spindle and provided at its under side with the pendentcatch 13, adapted to engage the laterally-projecting bracket when thecatch-plate is slid out ot' engagement with the enlargements,substantially as described.

In testimony whereof I have hereunto set my hand and affixed my seal inpresence ot two subscribing Witnesses.

GEORGE 1I. HAVEN.

lVitnesses:

FRANK H. GIFFORD, FRANK A. MILLIKEN.

